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Northwest Africa 1939 | |||||||||||||||||||
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Basic information | Name: Northwest Africa 1939 This is an OFFICIAL meteorite name. Abbreviation: NWA 1939 Observed fall: No Year found: 2003 Country: (Northwest Africa) Mass: 100.4 g | ||||||||||||||||||
Classification history: |
This is 1 of 451 approved meteorites classified as Howardite. [show all] Search for other: Achondrites, HED achondrites, and Howardites | ||||||||||||||||||
Writeup |
Writeup from MB 88:
Northwest Africa 1939 Morocco Found 2002 Achondrite (howardite) A 100.4 g incomplete stone was purchased in Rissani in 2003 June. Classification and mineralogy (J. Wittke and T. Bunch, NAU): medium-grained howardite composed of basaltic eucrites (72 vol%), diogenitic pyroxenes (17 vol%), granular eucrites (8 vol%) and shock clasts. Diogenitic pyroxenes are mostly pigeonite (mean, Fs39.3Wo7.3). Basaltic pyroxenes are Fs32.4-47.8Wo3-11.6, plagioclase, An89.8, with ilmenite, silica, and chromite (Cr/Cr+Al = 0.61). Shock level, S1; slightly weathered. Specimens: 19.5 g, NAU; main mass, MFarmer. | ||||||||||||||||||
Data from: MB88 Table 4 Line 95: |
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Institutions and collections |
ASU: Center for Meteorite Studies, Arizona State University, Tempe, Arizona 85287-1404, United States; Website (institutional address; updated 14 Jan 2012) NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012) MFarmer: Michael Farmer, P.O. Box 86059, Tucson, AZ 85754-6059, United States; Website (private address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
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Photos: |
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Geography: |
Statistics: This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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